Back in the 17th century , a Sicilian nun wrote a letter claiming she had been possess by the devil . Over 340 years later , scientist have finally deciphered this wander message using a decryption program they come across on the deep web .

The letter was supposedly written by Sister Maria Crocifissa della Concezione at the Monastery of Palma di Montechiaro in the former hours of August 11 , 1676 . The be forenoon , she awoke covered in ink and claimed she had been have by Satan , who forced her to write the message . At the time , claims like these were taken very severely . However , no one could work out what the letter of the alphabet said because it was written in a rumbled archaic ABC , Italian news show Radio 105reports .

There have been legion attempt over the centuries to decode the letter . In the 1960s , the monastery even offer a month - long vacation to anyone who could successfully interpret the content .

Now , the letter has made its way into the hands of Ludum Science Center in Catania , who have been deciphering the symbols using code - breaking software package plant on the deep web .

“ We see about the software , which we trust is used by intelligence services for codebreaking , ” Daniele Abate , theatre director of the Ludum Science Center , toldThe Times . “We prim the software with ancient Greek , Arabic , the Runic first rudiment , and Latin to de - scramble some of the letter and show that it really is devilish . ”

They have already translated 15 lines of the letter . So far , their work has break that the letter address of the relationship between God , Satan , and humans . It read : " God thinks he can free somebody . This organisation works for no one … Perhaps now , Styx is certain . " It blend in on to try and convince the nun to abandon her faith , argue that God is merely the conception of man and that Jesus and the Holy Ghost are “ dead weight ” .

Still , the query remains , why or how did the nun manage to write this ? The researcher have reason to believe the woman was suffering from bipolar disorder , so she could be prone to experiencing head game or hallucinations . She also was   familiar with several terminology and spend a lot of her time study   linguistics .

" My theory is that this is a precise ABC’s , invented by the nun with great guardianship by mixing symbol she make out , " Abate told Radio 105 . " Each symbol is well thought out and structured , there are signs that are repeated , perhaps an designed and perhaps unconscious go-ahead . The stress of liveliness in the monastery was very secure . "